some things that come to mind: - cartoonish grimaces and weird expressions; flicking darting eyes; audible snorts or grunts; cartoonish gestures like literally hitting themselves on the forehead - smiles that are more twisted lips without lifted cheeks & squinty eyes - hunching forward, closed crossed arms, tensed up shoulders, balled fists, attempts to hide body behind things - picking at scabs, biting nails, fidgeting or playing with clothes, adjusting pants - smelling like they just jerked off or haven't showered, or excessively strong axe body spray - excessive stillness & focus like a sniper watching a quarry, not blinking